Author : Fadhil Kadhier, Ahmed
Spectrophotometric Determination of Nickel (II) Ion by Novel Route of Calix-4-arenes as Analytical Reagent
journal of kerbala university,
Volume 4, Issue 4, Pages 97-109
A new route of Calix-4-arenes was prepared, a sensitive and selective spectrophotometric method was proposed for the rapid determination of Nickel (II) in analytical sample, The proposed method based on the formation green complex with anew route Calix-4-arenes as a new chromogenic reagent that has a maximum absorption at λmax 403 nm.Where the reaction was instantaneous in basic medium at pH=9.0, the absorbance of complex remains stable for over 24hr . Linearity was observed from 0.74-10.0 µg.ml-1 with detection limit of 0.5µg.ml-1. Recovery and relative error values of precision and accuracy of method were found to be R.S.D.% = 2.91, Re% =1.12% and Erel = 98.88% . The nature of complex showed that (M:L) ratio was 1:1 at pH=9 and the stability constant of ( 0.48x108 L1.mole-1) The effect of chemical and physical parameter and analytical parameter are evaluated . The proposed method was applied successfully to determine Ni(II) in analytical sample.